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| Part Number | 74LS20PC | 74LS27PC | 74LS260PC | 74LS26PC | 74LS30PC | 74LS21PC | 74LS28PC | 74LS20SC | 74LS40PC | 74LS00PC | 74LS10PC |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | National Semiconductor | National Semiconductor | National Semiconductor | National Semiconductor | National Semiconductor | National Semiconductor | National Semiconductor | National Semiconductor | Fairchild Semiconductor | National Semiconductor | Fairchild Semiconductor |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| Logic Type | - | - | NOR Gate | - | - | - | - | - | NAND Gate | - | NAND Gate |
| Number of Circuits | - | - | 2 | - | - | - | - | - | 2 | - | 3 |
| Number of Inputs | - | - | 5 | - | - | - | - | - | 4 | - | 3 |
| Features | - | - | - | - | - | - | - | - | - | - | - |
| Voltage - Supply | - | - | 4.75V ~ 5.25V | - | - | - | - | - | 4.75V ~ 5.25V | - | 4.75V ~ 5.25V |
| Current - Quiescent (Max) | - | - | 5.5 mA | - | - | - | - | - | 6 mA | - | 3.3 mA |
| Current - Output High, Low | - | - | 400µA, 8mA | - | - | - | - | - | - | - | - |
| Logic Level - Low | - | - | 0.8V | - | - | - | - | - | - | - | - |
| Logic Level - High | - | - | 2V | - | - | - | - | - | - | - | - |
| Max Propagation Delay @ V, Max CL | - | - | 12ns @ 5V, 15pF | - | - | - | - | - | - | - | - |
| Operating Temperature | - | - | 0°C ~ 70°C | - | - | - | - | - | 0°C ~ 70°C | - | 0°C ~ 70°C |
| Mounting Type | - | - | Through Hole | - | - | - | - | - | Through Hole | - | Through Hole |
| Supplier Device Package | - | - | 14-PDIP | - | - | - | - | - | 14-PDIP | - | 14-PDIP |
| Package / Case | - | - | 14-DIP (0.300", 7.62mm) | - | - | - | - | - | 14-DIP | - | 14-DIP |
